Balancing chemical equations - easy

Front

What is the definition of a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products along with their quantities.

Front

What are reactants in a chemical equation?

Back

Reactants are the substances that undergo a chemical change in a reaction, found on the left side of the equation.

Front

What are products in a chemical equation?

Back

Products are the substances formed as a result of a chemical reaction, found on the right side of the equation.

Front

What is the purpose of balancing a chemical equation?

Back

The purpose of balancing a chemical equation is to ensure that the number of atoms of each element is the same on both sides of the equation, adhering to the law of conservation of mass.

Front

What does a coefficient represent in a chemical equation?

Back

A coefficient is a number placed in front of a chemical formula in an equation, indicating how many molecules or moles of that substance are involved in the reaction.

Front

What is a subscript in a chemical formula?

Back

A subscript is a small number written to the right of a chemical symbol, indicating the number of atoms of that element in a molecule.

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients of the reactants and products until the number of atoms of each element is equal on both sides.

Front

What is the difference between coefficients and subscripts?

Back

Coefficients indicate the number of molecules, while subscripts indicate the number of atoms in a molecule.

Front

What is the balanced equation for the combustion of methane (CH₄)?

Back

The balanced equation is CH₄ + 2O₂ → CO₂ + 2H₂O.

Front

How many oxygen atoms are in 2H₂O?

Back

There are 2 oxygen atoms in 2H₂O.